#!/usr/bin/python
# -*- coding: utf-8 -*-

#This file is part of pyLot library.
#
# pyLot is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# pyLot is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with pyLot.  If not, see <http://www.gnu.org/licenses/>.

__author__ = u'Pierre Puiseux, Guillaume Baty'
__copyright__ = u"Copyright 2011-2012 (C) andheo, Université de Pau et des Pays de l'Adour"
__credits__ = [u'Pierre Puiseux', u'Guillaume Baty']
__license__ = "GNU Lesser General Public License"

__all__ = [u'StreamWriter']

from traits.api import implements

from ..interfaces.i_streamwriter import IStreamWriter

class StreamWriter(object):

  implements(IStreamWriter)

  def clear(self):
    self._clear()

  def _clear(self):
    pass

  def write (self, text, style=u'std'):
    assert (isinstance(text, unicode))
    self._write(text, style)

  # Please implements 
  def _write (self, text, style):
    u"""
    Please implement this function.

    No checks needed, all is yet done so ...
    text is an unicode string.
    style is a valid style (unicode string)

    :param text: text the user wants to write
    :param style: text style.
    """
    raise NotImplementedError


if __name__ == '__main__':
  import doctest
  doctest.testmod()
